These documents are intended to provide guidance to public water suppliers and their employees, MassDEP staff, and the public, on all regulatory and procedural aspects of maintaining a safe drinking water supply.

This guideline applies to public water suppliers and their representatives requesting written approval from MassDEP to install wind and solar energy projects on lands held by public water systems for drinking water purposes.

ORS has reviewed the most current data on the toxicology of methyl tertiary butyl ether (MTBE) and has concluded that a decrease by a factor of ten is appropriate and protective of public health for MTBE in drinking water.

As a senior municipal official representing the interests of your community, you should be aware that the federal Safe Drinking Water Act and the Massachusetts Drinking Water Regulations apply to all public water systems

In December 2004, House Bill 5001, An Act Authorizing Water Sub-Metering in Residential Tenancies, was signed into law and became effective March 16, 2005. The new law allows landlords to install sub-meters for residential tenants and to bill tenants for water and sewer use.

The purpose of this guide is to outline the specific state legal authorities granted to water commissioners, cities and towns, police, and boards of health who all play roles in ensuring the safety of our drinking water.